Google seems to say its pretty compact, best thing about it for notebooks is the nano receiver that can hardly be seen rather than the massive receivers that are normally half the size of the notebook itself.

I own one of the similiar models to this, and it's a great mouse. The battery for some unknown reason has lasted about a year now, it fits great in my hands and has great build quality. The only downer is lack of thumb buttons but other than that, it's awesome.